A Self-Similar Plus shape Fractal antenna with Hexagonal slotted EBG Structure

In this paper, self-similar fractal antenna with electromagnetic band gap (EBG) is proposed and studied. Fractal geometry is a methodology through which size reduction is achieved. Plus shaped fractal antennas with base, first and second iteration of order 1/3 are surrounded with Hexagonal square slotted EBG structures. This is designed on substrate with r=4.4 & h=1.6mm. The designed antenna resonates at multiple frequencies with improved return loss, bandwidth and gain. The resonant frequency of the antenna is reduced from 2.73 GHz to 2.32 GHz and 2.31 GHz after first and second iterations respectively. Hexagonal square slotted EBG with iterated antenna gives bandwidth of 155.23 MHz, size reduction of 28.12% and improved gain of 2.19dB. The Proposed antenna is simulated by using the method of moment based commercial software (IE3D) measured with Vector Network Analyzer. The simulated results are in good agreement with experimental results.